Valet
late 15th century (denoting a footman acting as an attendant to a horseman): from French; related to vassal.
wiktionary
Borrowed from Middle French valet, from Old French vaslet, from *vassellittus, diminutive of Late Latin vassallus(“manservant, domestic, retainer”), from vassus(“servant”), from Gaulish *wassos(“young man, squire”), from Proto-Celtic *wastos(“servant”) (compare Old Irish foss and Welsh gwas).
etymonline
valet (n.)
"personal man-servant," mid-14c. (late 12c. as a surname), from Old French valet, variant of vaslet "man's servant, workman's assistant," originally "squire, young man, youth of noble birth" (12c.), from Gallo-Roman *vassellittus "young nobleman, squire, page," diminutive of Medieval Latin vassallus, from vassus "servant" (see vassal). Modern sense is usually short for valet de chambre; the general sense of "male household servant of the meaner sort" going with the variant form varlet. First recorded use of valet parking is from 1959.
